1 dnl Template file for GNU Autoconf
2 dnl Copyright (C) 1995, 1996, 1997, 2001 Free Software Foundation, Inc.
4 dnl This program is free software; you can redistribute it and/or modify
5 dnl it under the terms of the GNU General Public License as published by
6 dnl the Free Software Foundation; either version 2 of the License, or
7 dnl (at your option) any later version.
9 dnl This program is distributed in the hope that it will be useful,
10 dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
11 dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 dnl GNU General Public License for more details.
14 dnl You should have received a copy of the GNU General Public License
15 dnl along with this program; if not, write to the Free Software
16 dnl Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18 dnl In addition, as a special exception, the Free Software Foundation
19 dnl gives permission to link the code of its release of Wget with the
20 dnl OpenSSL project's "OpenSSL" library (or with modified versions of it
21 dnl that use the same license as the "OpenSSL" library), and distribute
22 dnl the linked executables. You must obey the GNU General Public License
23 dnl in all respects for all of the code used other than "OpenSSL". If you
24 dnl modify this file, you may extend this exception to your version of the
25 dnl file, but you are not obligated to do so. If you do not wish to do
26 dnl so, delete this exception statement from your version.
29 dnl Process this file with autoconf to produce a configure script.
32 AC_INIT(src/version.c)
34 AC_CONFIG_HEADER(src/config.h)
37 dnl What version of Wget are we building?
39 VERSION=`sed -e 's/^.*"\(.*\)";$/\1/' ${srcdir}/src/version.c`
40 AC_MSG_NOTICE([configuring for GNU Wget $VERSION])
46 dnl Get cannonical host
49 AC_DEFINE_UNQUOTED(OS_TYPE, "$host_os")
55 [ --with-socks use the socks library],
56 [AC_DEFINE(HAVE_SOCKS)])
59 [[ --with-ssl[=SSL-ROOT] link with SSL support [default=auto]
60 --without-ssl disable SSL autodetection]])
63 [ --disable-opie disable support for opie or s/key FTP login],
64 USE_OPIE=$enableval, USE_OPIE=yes)
65 test x"${USE_OPIE}" = xyes && AC_DEFINE(USE_OPIE)
68 [ --disable-digest disable support for HTTP digest authorization],
69 USE_DIGEST=$enableval, USE_DIGEST=yes)
70 test x"${USE_DIGEST}" = xyes && AC_DEFINE(USE_DIGEST)
73 [ --disable-debug disable support for debugging output],
74 ENABLE_DEBUG=$enableval, ENABLE_DEBUG=yes)
75 test x"${ENABLE_DEBUG}" = xyes && AC_DEFINE(ENABLE_DEBUG)
79 case "${USE_OPIE}${USE_DIGEST}" in
83 if test x"$USE_OPIE" = xyes; then
89 dnl Whether make sets $(MAKE)...
94 dnl Find a good install
102 dnl We want these before the checks, so the checks can modify their values.
103 test -z "$CFLAGS" && CFLAGS= auto_cflags=1
104 test -z "$CC" && cc_specified=yes
109 dnl if the user hasn't specified CFLAGS, then
110 dnl if compiler is gcc, then use -O2 and some warning flags
111 dnl else use os-specific flags or -O
113 if test -n "$auto_cflags"; then
114 if test -n "$GCC"; then
115 CFLAGS="$CFLAGS -O2 -Wall -Wno-implicit"
118 *hpux*) CFLAGS="$CFLAGS +O3" ;;
119 *ultrix* | *osf*) CFLAGS="$CFLAGS -O -Olimit 2000" ;;
120 *) CFLAGS="$CFLAGS -O" ;;
131 dnl Configure our included libtool and make sure it's regenerated when needed
134 AC_SUBST(LIBTOOL_DEPS)
137 dnl In case of {cyg,gnu}win32. Should be a _target_ test.
138 dnl Might also be erelevant for DJGPP.
141 *win32) exeext='.exe';;
147 dnl Check if we can handle prototypes.
152 dnl Checks for typedefs, structures, and compiler characteristics.
161 dnl Check integral type sizes.
163 AC_CHECK_SIZEOF(short)
165 AC_CHECK_SIZEOF(long)
166 AC_CHECK_SIZEOF(long long)
167 AC_CHECK_HEADERS(inttypes.h)
168 AC_CHECK_TYPES(uint32_t)
171 dnl Checks for headers
173 AC_CHECK_HEADERS(string.h stdarg.h unistd.h sys/time.h utime.h sys/utime.h pwd.h)
174 AC_CHECK_HEADERS(termios.h sys/ioctl.h sys/select.h sys/utsname.h)
175 AC_CHECK_HEADERS(signal.h setjmp.h)
179 dnl Return type of signal-handlers
184 dnl Checks for library functions.
188 AC_CHECK_FUNCS(strdup strstr strcasecmp strncasecmp strpbrk memmove)
189 AC_CHECK_FUNCS(gettimeofday mktime strptime strerror snprintf vsnprintf)
190 AC_CHECK_FUNCS(select sigblock sigsetjmp signal symlink access isatty)
191 AC_CHECK_FUNCS(uname gethostname usleep)
194 dnl Call Wget's local macros defined in aclocal.
203 dnl Check if we need to compile in getopt.c.
205 AC_CHECK_FUNC(getopt_long, [], [
206 GETOPT_OBJ='getopt$o'
211 dnl Checks for libraries.
214 dnl #### This appears to be deficient with later versions of SOCKS.
215 if test "x${with_socks}" = xyes
217 AC_CHECK_LIB(resolv, main)
218 AC_CHECK_LIB(socks, Rconnect)
221 dnl $with_ssl can be one of:
222 dnl - empty string or "auto", meaning autodetect SSL and use it if found.
223 dnl - "yes", meaning link with SSL or bail out.
224 dnl - "no", meaning don't link with SSL.
225 dnl - anything else, meaning use that as the SSL root, and bail out
228 if test x"$with_ssl" = x; then
229 dnl Canonicalize unspecified with-ssl setting to "auto". This
230 dnl implements the "auto-detect by default" feature. If you want to
231 dnl change this to "ignore SSL by default", change "auto" to "no".
235 dnl Detection of OpenSSL is much hairier than the detection of other
236 dnl libraries because OpenSSL can be compiled as a third-party
237 dnl library, which means it will not be found without additional
238 dnl linker magic. It would be really nice to rework this check into
239 dnl an AC_DEFUN so that we can reuse it for other third-party
242 if test x"$with_ssl" != x"no"; then
245 if test x"$with_ssl" = x"yes"; then
249 if test x"$with_ssl" = x"yes" || test x"$with_ssl" = x"auto"; then
250 dnl OpenSSL's root was not specified, so we have to guess. First
251 dnl try the system default location, then "/usr/local/ssl" (where
252 dnl OpenSSL installs by default), then "/usr/local" (traditional
253 dnl choice for installation root), then "/opt".
254 ssl_all_roots="system-default /usr/local/ssl /usr/local /opt"
256 dnl Root has been specified by the user.
257 ssl_all_roots=$with_ssl
263 wget_save_LDFLAGS=$LDFLAGS
264 wget_save_CPPFLAGS=$CPPFLAGS
266 dnl Use libtool for OpenSSL tests so we can specify "-R<rpath>"
267 dnl without having to know how the linker handles it.
268 CC="$SHELL ./libtool $CC"
270 dnl Unfortunately, as of this writing (OpenSSL 0.9.6), the libcrypto
271 dnl shared library doesn't record its dependency on libdl, so we
272 dnl need to check for it ourselves so we won't fail to link due to a
273 dnl lack of -ldl. Most OSes use dlopen(), but HP-UX uses
275 AC_CHECK_LIB(dl,dlopen)
276 AC_CHECK_LIB(dl,shl_load)
280 dnl Now try to find SSL libraries in each of the likely SSL roots.
281 for ssl_root in $ssl_all_roots
283 if test x"$ssl_root" = x"system-default"; then
284 dnl Try the default include and library locations.
287 dnl Try this specific root.
288 SSL_INCLUDES=-I$ssl_root/include
289 dnl It's OK to use -R directly because libtool will
290 dnl interpret it for us.
291 LDFLAGS="-L$ssl_root/lib -R$ssl_root/lib $wget_save_LDFLAGS"
294 AC_MSG_RESULT([Looking for SSL libraries in $ssl_root])
296 dnl Check whether the compiler can find the include files. On
297 dnl some systems Gcc finds libraries in /usr/local/lib, but fails
298 dnl to find the includes in /usr/local/include.
300 ssl_found_includes=no
301 CPPFLAGS="$SSL_INCLUDES $wget_save_CPPFLAGS"
303 AC_MSG_CHECKING([for includes])
305 AC_TRY_CPP([#include <openssl/ssl.h>
306 #include <openssl/rsa.h>
308 AC_MSG_RESULT(found); ssl_found_includes=yes,
309 AC_MSG_RESULT([not found])
312 if test x"$ssl_found_includes" = xno; then
318 dnl Make sure that the checks don't run afoul of the cache. It
319 dnl would be nicer to temporarily turn off the cache, but
320 dnl apparently Autoconf doesn't allow that.
322 unset ac_cv_lib_crypto_RSA_new
323 unset ac_cv_lib_ssl_SSL_new
325 dnl These checks need to be in this order, or you'll get a link
326 dnl failure if you use a static libcrypto.a and libssl.a rather
327 dnl than shared libraries.
329 AC_CHECK_LIB(crypto, RSA_new, , ssl_link_failure=yes)
330 AC_CHECK_LIB(ssl, SSL_new, , ssl_link_failure=yes)
332 if test x"$ssl_link_failure" = xyes; then
333 dnl One or both libs failed to link.
337 dnl The libraries link. But we still need to check if the program
338 dnl linked with those libraries under these settings with run. On
339 dnl some systems (Solaris), Gcc adds -L/usr/local/lib to the
340 dnl linking line, but fails to add -R/usr/local/lib, thus creating
341 dnl executables that link, but fail to run.
343 dnl If we are cross-compiling, just assume that working linkage
344 dnl implies working executable.
348 AC_MSG_CHECKING([whether SSL libs are resolved at runtime])
355 AC_MSG_RESULT(no); ssl_run_failure=yes,
359 if test x"$ssl_run_failure" = xno; then
365 if test x"$ssl_success" = xyes; then
366 dnl AC_MSG_RESULT doesn't look right here, but I'm not sure what
368 AC_MSG_RESULT([Compiling in support for SSL in $ssl_root])
370 AC_SUBST(SSL_INCLUDES)
371 SSL_OBJ='gen_sslfunc$o'
374 LDFLAGS=$wget_save_LDFLAGS
377 dnl If linking with SSL was forced rather than auto-detected, then
378 dnl bail out if SSL failed.
379 if test x"$wget_force_ssl" = x"yes"; then
380 AC_MSG_ERROR([failed to find OpenSSL libraries], 2)
384 dnl Restore the compiler setting.
387 dnl Restore the CPPFLAGS. Do this regardless of whether linking
388 dnl with SSL succeeded -- SSL includes will be handled using
390 CPPFLAGS=$wget_save_CPPFLAGS
394 dnl Find an md5 implementation.
397 if test x"$wget_need_md5" = xyes
399 dnl This should be moved to an AC_DEFUN, but I'm not sure how to
400 dnl manipulate MD5_OBJ from the defun.
405 dnl Check for the system MD5 library on Solaris. We don't check for
406 dnl something simple like "MD5Update" because there are a number of
407 dnl MD5 implementations that use that name. md5_calc is, hopefully,
408 dnl specific to the Solaris MD5 library.
409 if test x"$found_md5" = xno; then
410 AC_CHECK_LIB(md5, md5_calc, [
411 dnl Some installations have bogus <md5.h> in the compiler's
412 dnl include path, making the system md5 library useless.
413 AC_MSG_CHECKING([whether md5.h can be included])
414 AC_COMPILE_IFELSE([#include <md5.h>
417 AC_DEFINE(HAVE_SOLARIS_MD5)
420 AC_MSG_NOTICE([using the Solaris MD5 implementation])
421 ], [AC_MSG_RESULT(no)])
425 dnl Then see if we're linking OpenSSL anyway; if yes, use its md5
427 if test x"$found_md5" = xno; then
428 if test x"$ssl_success" = xyes; then
429 AC_DEFINE(HAVE_OPENSSL_MD5)
431 AC_MSG_NOTICE([using the OpenSSL MD5 implementation])
435 dnl If none of the above worked, use the one we ship with Wget.
436 if test x"$found_md5" = xno; then
437 AC_DEFINE(HAVE_BUILTIN_MD5)
438 MD5_OBJ="$MD5_OBJ gnu-md5\$o"
440 AC_MSG_NOTICE([using the GNU MD5 implementation])
446 dnl **********************************************************************
448 dnl **********************************************************************
451 dnl If --enable-ipv6 is specified, we try to use IPv6 (as long as
452 dnl getaddrinfo is also present). If --disable-ipv6 is specified, we
453 dnl don't use IPv6 or getaddrinfo.
459 AC_HELP_STRING([--disable-ipv6],[disable IPv6 support]),
460 [case "${enable_ipv6}" in
462 AC_MSG_NOTICE([Disabling IPv6 at user request])
469 dnl If unspecified, check for IPv6 and use it where available.
473 if test "X$ipv6" = "Xyes" || test "X$check_for_ipv6" = "Xyes"; then
474 AC_CHECK_FUNCS(getaddrinfo,[
475 GETADDRINFO_AI_ADDRCONFIG(
477 [HAVE_GETADDRINFO_AI_ADDRCONFIG], 1,
478 [Define if the system headers support the AI_ADDRCONFIG flag.]
481 GETADDRINFO_AI_V4MAPPED(
483 [HAVE_GETADDRINFO_AI_V4MAPPED], 1,
484 [Define if the system headers support the AI_V4MAPPED flag.]
489 [HAVE_GETADDRINFO_AI_ALL], 1,
490 [Define if the system headers support the AI_ALL flag.]
494 AC_MSG_NOTICE([Disabling IPv6 support: your system does not support getaddrinfo(3)])
499 if test "X$ipv6" = "Xyes" || test "X$check_for_ipv6" = "Xyes"; then
501 AC_MSG_NOTICE([Disabling IPv6 support: your system does not support the PF_INET6 protocol family])
506 if test "X$ipv6" = "Xyes" || test "X$check_for_ipv6" = "Xyes"; then
507 TYPE_STRUCT_SOCKADDR_IN6([
510 AC_MSG_NOTICE([Disabling IPv6 support: your system does not support 'struct sockaddr_in6'])
513 if test "X$ipv6" = "Xyes"; then
518 if test "X$ipv6" = "Xyes"; then
519 AC_DEFINE([ENABLE_IPV6], 1, [Define if IPv6 support is enabled.])
524 dnl Set of available languages.
526 ALL_LINGUAS=`(cd ${srcdir}/po && ls *.po | sed -e 's/\.po$//' | tr '\012' ' ')`
528 dnl Originally this used to be static, looking like this:
529 dnl ALL_LINGUAS="cs de hr it ..."
530 dnl The downside was that configure needed to be rebuilt whenever a
531 dnl new language was added.
533 dnl internationalization macros
537 dnl Find makeinfo. If makeinfo is not found, look for Emacs. If
538 dnl Emacs cannot be found, look for XEmacs.
541 AC_CHECK_PROGS(MAKEINFO, makeinfo emacs xemacs)
543 case "${MAKEINFO}" in
544 *makeinfo) MAKEINFO="${MAKEINFO} \$(srcdir)/wget.texi" ;;
545 *emacs | *xemacs) MAKEINFO="${MAKEINFO} -batch -q -no-site-file -eval '(find-file \"\$(srcdir)/wget.texi\")' -l texinfmt -f texinfo-format-buffer -f save-buffer" ;;
546 *) MAKEINFO="makeinfo \$(srcdir)/wget.texi" ;;
550 dnl Find perl and pod2man
553 AC_PATH_PROGS(PERL, perl5 perl, no)
554 AC_PATH_PROG(POD2MAN, pod2man, no)
556 if test "x${POD2MAN}" = xno; then
557 COMMENT_IF_NO_POD2MAN="# "
559 COMMENT_IF_NO_POD2MAN=
561 AC_SUBST(COMMENT_IF_NO_POD2MAN)
566 AC_OUTPUT([Makefile src/Makefile doc/Makefile util/Makefile po/Makefile.in
569 test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h])